The THAADS system is produced by top defense contractor Lockheed Martin Corp. (LMT).

The U.S. has deployed the THAADS interceptor trucks to Guam.
[Image Source: Lockheed Martin]

While U.S. defense experts doubt North Korea would be able to hit the U.S. mainland with a nuclear missile, Guam -- 2,000 away from the hostile Asian dictatorship -- might be a slightly more feasible target. Both South Korea and Japan have extensive interceptor systems, which are likely on high alert.

U.S. ally Israel provided the most impressive real-world demonstration of a missile-interception system to date. Its "Iron Dome" system shot down approximately 9 out of 10 missiles that were headed towards a populated region. Past interceptor systems used in the Persian Gulf conflicts by the U.S. had lower success rates.

Ballistic missile interception is a more unproven art. Ballistic missiles are bigger (and hence a bigger target), but are also generally faster than the kind of small rockets Iron Dome or Patriot-missile (U.S.) interceptor systems target. Israel has an interceptor system of its own dubbed Arrow, which the U.S. co-founded and shares technology from. Fortunately, that system has never been called upon in a real war scenario.

He is using the boys will be boys approach to handling foreign affairs. That NK is just letting out some teenage angst and if we just let them do their thing they will tire themselves out and grow up.

Then 10 years from now once NK does something super bad. Then he will use the dove excuse (mars attack). He will find something stupid and insignificant, that US did, and use that as proof of American aggression.